Leopardstar knows her destiny is to save RiverClan from destruction, so as the rise of ThunderClan deputy Tigerstar shatters peace among the clans, Leopardstar must decide what kind of leader she will be.

After the medicine cat has a dark vision during an already dark and uncertain period for ShadowClan, Tigerheart considers leaving the clan for good in order to save it.

As Hollypaw, Lionpaw, and Jaypaw, grandchildren of the legendary Firestar, continue their training to be warrior cats, each is haunted by a different internal struggle that could lead to trouble for all Clans.

Deep in the heart of the forest, four clans of warrior cats coexist in uneasy harmony -- but uncertain times are upon them, and dangers threaten the precarious balance of the forest. Fireheart is a ThunderClan warrior cat now, but his troubles are far from over. As the chill of winter sets in, the cats of rival RiverClan grow restless, while WindClan is weak and facing threats from all sides. As tensions build to an explosive climax, Fireheart faces...

"After an act of betrayal rocks the Bravelands, baboon Thorn must find a way to confront treachery in his own troop, while elephant Sky searches for answers and lion Fearless contends with the usurper who conquered his father's pride"--

Sent on a journey that could change the fate of all of the warrior clans, Hawkpaw is given the warrior name of Hawkwing. As deputy of SkyClan, he must find the kin of Firestar, the cat who once brought their clan back from obscurity.

As a young WindClan warrior, Onewhisker never thought he would one day become Clan leader, but when he is unexpectedly chosen by Tallstar as his successor, Onestar must learn to guide his Clanmates through the hardships of forging a new life in unknown territory.

"The traitor behind the sabotage and divisions within the Wild Pack has been unmasked, and one final confrontation will decide whether the Pack survives"--

When Firestar's grandchildren, Hollyleaf, Lionblaze, and Jayfeather, finally discover who their true parents are, there are dire consequences for ThunderClan and the Warrior Code.

Leafstar is struggling to keep SkyClan united in the wake of the flood that destroyed their camp, but her Clanmates are scared of what might happen next. Meanwhile, Sol continues to demand that Leafstar make him a warrior, but Leafstar isn't sure that Sol will ever be ready to embrace the warrior code. As SkyClan faces another devastating challenge, Leafstar must figure out what is best for her Clanonce and for all.